Skurzynski's beautifully designed book, her third title in the Your High-Tech World series, explores the principles and workings of modern telecommunications technology in an exceptionally readable and concise manner. Lavishly illustrated with full-color, clearly (and sometimes humorously) captioned photographs and diagrams, the book is so attractive it will appeal to browsers as well as researchers. Photographs of people (many of whom are teens) using a variety of telecommunications devices in everyday situations provide the starting point for the explanations, which branch out to include the history of telecommuncations technology and its future applications. Difficult terms and concepts are thoroughly defined in the text (and often through illustrations), then are redefined in the glossary. A valuable resource for school and public library collections, the book may also precipitate some interesting discussions about communication and information dissemination.